We have been able to obtain X-ray photon correlation spectroscopy (XPCS)
quality data from the Ag (001) and Ag (111) surfaces at two different
locations along the specular scattering rod. We observe dynamic behavior
related to temperature and gas-phase composition. We will present the
methods of the XPCS analysis routines, as they have been adapted to this
specific system, and the preliminary results for the dynamics, such as step
edge motion, island growth, and surface phase transitions, of the Ag surface
features in these different conditions. These dynamics are also q dependent
and vary from slow at low q, to faster dynamics at positions near the Ag
(001) anti-Bragg scattering position where the experimental sensitivity is
sufficient to detect changes at a monolayer level. This indicates that the
dynamics involved are occurring right at the surface and do not involve
multiple layers. These results will then be compared to our recent similar
measurements on the Au (001) surface [1].\\[4pt]
[1] M.S. Pierce, V. Komanicky, A. Barbour, D.C. Hennessy, A. Sandy, and H.
You, Physical Review B 86, 085410 (2012).

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2013.MAR.M40.2